/* @import url('https://fonts.googleapis.com/css2?family=Poppins:wght@300;400;500;600;700&display=swap');  // 字体库 */
*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
body{
    background: #1f242d;
    color: #fff;
}

.header{
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    padding: 20px 10%;
    background: transparent;
    display: flex;
    justify-content: space-between;
    align-items: center;
    z-index: 100;
}

.logo{
    font-size:25px;
    color: #fff;
    text-decoration: none;
    font-weight: 600;
    cursor: default;
    /* 控制动画 */
    opacity: 0;
    animation: slideRight 1s ease forwards;
}

.navbar a{
    display: inline-block;
    font-size: 18px;
    color: #fff;
    text-decoration: none;
    font-weight: 500;
    margin-left: 35px;
    opacity: 0;
    transition: 0.3s;
    animation: slideTop 0.8s ease forwards;
    /* 动画延迟 */
    animation-delay: calc(.2s * var(--i));
}

.navbar a:hover,
.navbar a.active{
    color: #b7b2a9;
}

.home{
    position: relative;
    width: 100%;
    height: 100vh;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 70px 10% 0;
}

.home-content{
    max-width: 600px;
}

.home-content h3{
    font-size: 32px;
    font-weight: 700;
    opacity: 0;
    animation: slideBottom 1s ease forwards;
    animation-delay: .7s;
}

.home-content h3:nth-of-type(2){
    margin-bottom: 30px;
    opacity: 0;
    animation: slideTop 1s ease forwards;
    animation-delay: .7s;
}

.home-content h3 span{
    color: #b7b2a9;
}

.home-content h1{
    font-size: 48px;
    font-weight: 700;
    margin: -3px 0;
    opacity: 0;
    animation: slideLeft 1s ease forwards;
    animation-delay: 1s;
}

.home-content p{
    font-size: 16px;
    opacity: 0;
    animation: slideRight 1s ease forwards;
    animation-delay: 1s;
}

.home-img img{
    max-width: 450px;
    border-radius: 50%;
    margin-right: -20px;
    box-shadow:  0 0 20px #b7b2a9;

    opacity: 0;
    animation: zoomIn 1s ease forwards,floatImage 3s ease-in-out infinite;
    animation-delay: .7s,2s;
}

.social-media a{
    display: inline-flex;
    justify-content: center;
    align-items: center;
    width: 40px;
    height: 40px;
    background: transparent;
    border: 2px solid #b7b2a9;
    border-radius: 50%;
    color: #b7b2a9;
    font-size: 20px;
    text-decoration: none;
    margin: 30px 15px 30px 0;
    transition: 0.5s ease;

    opacity: 0;
    animation: slideRight 1s ease forwards;
    animation-delay: calc(.1s * var(--i));
}

.social-media a:hover{
    background: #b7b2a9;
    color: #1f242d;
    box-shadow: 0 0 20px #b7b2a9;
}

.btn{
    display: inline-block;
    padding: 12px 28px;
    background: #b7b2a9;
    text-decoration: none;
    border-radius: 40px;
    box-shadow: 0 0 5px #b7b2a9;
    font-size: 16px;
    color: #1f242d;
    letter-spacing: 1px;
    font-weight: 600;
    transition: 0.5s ease;

    opacity: 0;
    animation: slideTop 1s ease forwards;
    animation-delay: .7s;
}

.btn:hover{
    box-shadow: 0 0 10px #b7b2a9;
}

.btn:active{
    background: none;
    color: #b7b2a9;
    border: 2px solid #b7b2a9;
}


/* 动画 */
@keyframes slideRight{
    0%{
        transform: translateX(-100px);
    }
    100%{
        transform: translateX(0);
        opacity: 1;
    }
}

@keyframes slideTop{
    0%{
        transform: translateY(100px);
    }
    100%{
        transform: translateY(0);
        opacity: 1;
    }
}

@keyframes slideBottom{
    0%{
        transform: translateY(-100px);
    }
    100%{
        transform: translateY(0);
        opacity: 1;
    }
}

@keyframes slideLeft{
    0%{
        transform: translateX(100px);
    }
    100%{
        transform: translateY(0);
        opacity: 1;
    }
}

@keyframes zoomIn{
    0%{
        transform: scale(0);
    }
    100%{
        transform: scale(100%);
        opacity: 1;
    }
}


@keyframes floatImage{
    0%{
        transform: translateY(0);
    }
    50%{
        transform: translateY(-24px);
    }
    100%{
        transform: translateY(0);
    }
}